Let x be the number of the top-of-the-line widgets. Then the number of the basic widgets is 2x, according to the condition, and the rest (325-x-2x) = (325-3x) widgets are mid-price. Then the total revenue equation is 10*(2x) + 12*(325-3x) + 15x = 3825 dollars. From the equation, x == 75. ANSWER. 75 top-of-the-line widgets; 2*75 = 150 basic widgets; and the rest (325 - 75 - 150) = 100 are mid-price widgets.